The TDD Tetrahedron, or if you wish, pyramid, has reached 2.0. Like cars, the new model is bigger and comes with new technology.
By pure coincidence, I ran into somebody willing to print this. So here it is, the version 2.0 of the TDD Tetrahedron. The new version has sides of 100 mm and it is made of plastic.
What’s it for?
Well, if you didn’t use the older version, you may be wondering what’s so great about this. It is all about mental focus.